Following are the "non-negotiables" of Christian living, the necessary components of walking with God, in the order in which they stand logically in the believer's life.
1.) Knowledge.
Romans 10:13-14
13 for "Whoever will call on the name of the Lord will be saved."
14 How then will they call on Him in whom they have not believed? How will they believe in Him whom they have not heard?...
2 Timothy 1:12
12 ...for I know whom I have believed and I am convinced...
2.) Faith.
Hebrews 11:6
6 And without faith it is impossible to please Him, for he who comes to God must believe that He is and that He is a rewarder of those who seek Him.
2 Corinthians 5:7
7 for we walk by faith, not by sight—
3.) Love.
Matthew 22:36-38
36 “Teacher, which is the great commandment in the Law?”
37 And he said to him, “You shall love the Lord your God with all your heart and with all your soul and with all your mind.
38 This is the great and first commandment.
1 Corinthians 13:1-3
1 If I speak in the tongues of men and of angels, but have not love, I am a noisy gong or a clanging cymbal.
2 And if I have prophetic powers, and understand all mysteries and all knowledge, and if I have all faith, so as to remove mountains, but have not love, I am nothing.
3 If I give away all I have, and if I deliver up my body to be burned, but have not love, I gain nothing.
4.) Submission.
James 4:6-10
6 ...“God opposes the proud, but gives grace to the humble.”
7 Submit yourselves therefore to God. Resist the devil, and he will flee from you.
8 Draw near to God, and he will draw near to you. Cleanse your hands, you sinners, and purify your hearts, you double-minded.
9 Be wretched and mourn and weep. Let your laughter be turned to mourning and your joy to gloom.
10 Humble yourselves before the Lord, and he will exalt you.
Romans 12:1
1 I appeal to you therefore, brothers, by the mercies of God, to present your bodies as a living sacrifice, holy and acceptable to God, which is your spiritual worship.
5.) Holiness.
Hebrews 12:14
14 Strive for peace with everyone, and for the holiness without which no one will see the Lord.
1 Peter 1:15-16
15 but as he who called you is holy, you also be holy in all your conduct,
16 since it is written, “You shall be holy, for I am holy.”
6.) Fellowship.
1 John 1:3
3 ...our fellowship is with the Father and with his Son Jesus Christ.
2 Corinthians 13:14
14 The grace of the Lord Jesus Christ and the love of God and the fellowship of the Holy Spirit be with you all.
Luke 15:20-23
20 And he arose and came to his father. But while he was still a long way off, his father saw him and felt compassion, and ran and embraced him and kissed him.
21 And the son said to him, ‘Father, I have sinned against heaven and before you. I am no longer worthy to be called your son.’
22 But the father said to his servants, ‘Bring quickly the best robe, and put it on him, and put a ring on his hand, and shoes on his feet.
23 And bring the fattened calf and kill it, and let us eat and celebrate.
There is no walking with God apart from these things. If one or more of them is absent from one's daily living, one is not walking with God. But they build upon one another, knowledge giving rise to faith, which gives rise to love, which prompts submission, which results in holiness and, finally, daily fellowship with God, which is the ultimate point of all of these things.