How can I Corinthians chapter 16:1-2 apply to all Christians today? It is in direct contradiction of 2 Corinthians 9:6-8. How can one be commanded to give what one has purposed in his heart and at the same time not give out of necessity and/or compulsion? A command doesn’t give credence to the notion of how one should feel about it; however, the latter passage suggests the state of the heart of the individual. Isn’t this just another tradition of the churches of Christ?
Neither passage is a tradition of churches of Christ. Both are teachings of scripture. There is no contradiction between the passages. Your question does not state what the contradiction is, but implies that it arises from the fact that one (1 Cor. 16:1-2) commands giving while the other (2 Cor. 9:6-8) directs the spirit in which the giving is to be done. Your underlying assumption is that the spirit or attitude with which a command is performed cannot itself be commanded. Neither support nor argument is given to support that conclusion. Examination discloses that the conclusion is incorrect.
For example, take this command: “And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbor as thyself.” Luke 10:27; see also Matt. 22:37, Mark 12:30. It is the right attitude or heart that makes obedience obedience instead of a mechanical going through of the motion. Romans 6:17-18 is to the point: “But thanks be to God, that, whereas ye were servants of sin, ye became obedient from the heart to that form of teaching whereunto ye were delivered; 18 and being made free from sin, ye became servants of righteousness.” The Lord spoke to the necessity of the right heart: “This people honoreth me with their lips; But their heart is far from me. 9 But in vain do they worship me, Teaching as their doctrines the precepts of men.” Matthew 15:8-9; see also Mark 7:6. It is often overlooked that Old Testament obedience had the same requirement. In fact, the Lord was quoting Isaiah 29:13: “And the Lord said, Forasmuch as this people draw nigh unto me, and with their mouth and with their lips to honor me, but have removed their heart far from me, and their fear of me is a commandment of men which hath been taught them.”
From Genesis to Revelation the love of God is enjoined. This includes the manner in which and the motive that prompts our obedience. “For this is the love of God, that we keep his commandments: and his commandments are not grievous.” 1 John 5:3. If ye love me, ye will keep my commandments.” John 14:15. If I speak with the tongues of men and of angels, but have not love, I am become sounding brass, or a clanging cymbal. 2 And if I have the gift of prophecy, and know all mysteries and all knowledge; and if I have all faith, so as to remove mountains, but have not love, I am nothing. 3 And if I bestow all my goods to feed the poor, and if I give my body to be burned, but have not love, it profiteth me nothing. 4 Love suffereth long, and is kind; love envieth not; love vaunteth not itself, is not puffed up, 5 doth not behave itself unseemly, seeketh not its own, is not provoked, taketh not account of evil; 6 rejoiceth not in unrighteousness, but rejoiceth with the truth; 7 beareth all things, believeth all things, hopeth all things, endureth all things. 8 Love never faileth: but whether there be prophecies, they shall be done away; whether there be tongues, they shall cease; whether there be knowledge, it shall be done away. 9 For we know in part, and we prophesy in part; 10 but when that which is perfect is come, that which is in part shall be done away. 11 When I was a child, I spake as a child, I felt as a child, I thought as a child: now that I am become a man, I have put away childish things. 12 For now we see in a mirror, darkly; but then face to face: now I know in part; but then shall I know fully even as also I was fully known. 13 But now abideth faith, hope, love, these three; and the greatest of these is love.” 1 Corinthians 13:1-13.
You Must Hear the Gospel
You must hear the gospel and then understand and recognize that you are lost without Jesus Christ no matter who you are and no matter what your background is. The Bible tells us that “all have sinned, and come short of the glory of God.” (Romans 3:23) Before you can be saved, you must understand that you are lost and that the only way to be saved is by obedience to the gospel of Jesus Christ. (2 Thessalonians 1:8) Jesus said, “I am the way, the truth, and the life: no man cometh unto the Father, but by me.” (John 14:6) “Neither is there salvation in any other: for there is none other name under heaven given among men, whereby we must be saved.” (Acts 4:12) "So then faith cometh by hearing, and hearing by the word of God." (Romans 10:17)
You Must Believe
You must believe and have faith in God because “without faith it is impossible to please him: for he that cometh to God must believe that he is, and that he is a rewarder of them that diligently seek him.” (Hebrews 11:6) But neither belief alone nor faith alone is sufficient to save. (James 2:19; James 2:24; Matthew 7:21)
You Must Repent
You must repent of your sins. (Acts 3:19) But repentance alone is not enough. The so-called “Sinner’s Prayer” that you hear so much about today from denominational preachers does not appear anywhere in the Bible. Indeed, nowhere in the Bible was anyone ever told to pray the “Sinner’s Prayer” to be saved. By contrast, there are numerous examples showing that prayer alone does not save. Saul, for example, prayed following his meeting with Jesus on the road to Damascus (Acts 9:11), but Saul was still in his sins when Ananias met him three days later (Acts 22:16). Cornelius prayed to God always, and yet there was something else he needed to do to be saved (Acts 10:2, 6, 33, 48). If prayer alone did not save Saul or Cornelius, prayer alone will not save you. You must obey the gospel. (2 Thess. 1:8)
You Must Confess
You must confess that Jesus Christ is the Son of God. (Romans 10:9-10) Note that you do NOT need to make Jesus “Lord of your life.” Why? Because Jesus is already Lord of your life whether or not you have obeyed his gospel. Indeed, we obey him, not to make him Lord, but because he already is Lord. (Acts 2:36) Also, no one in the Bible was ever told to just “accept Jesus as your personal savior.” We must confess that Jesus is the Son of God, but, as with faith and repentance, confession alone does not save. (Matthew 7:21)
You Must Be Baptized
Having believed, repented, and confessed that Jesus is the Son of God, you must be baptized for the remission of your sins. (Acts 2:38) It is at this point (and not before) that your sins are forgiven. (Acts 22:16) It is impossible to proclaim the gospel of Jesus Christ without teaching the absolute necessity of baptism for salvation. (Acts 8:35-36; Romans 6:3-4; 1 Peter 3:21) Anyone who responds to the question in Acts 2:37 with an answer that contradicts Acts 2:38 is NOT proclaiming the gospel of Jesus Christ!
You Must Be Faithful Unto Death
Once you are saved, God adds you to his church and writes your name in the Book of Life. (Acts 2:47; Philippians 4:3) To continue in God’s grace, you must continue to serve God faithfully until death. Unless they remain faithful, those who are in God’s grace will fall from grace, and those whose names are in the Book of Life will have their names blotted out of that book. (Revelation 2:10; Revelation 3:5; Galatians 5:4)