So the Bible tells me as a Christian I am to "walk...in Him." I hear I am to live for Him but just how do I do that?
Rather than me giving an answer, let's see if the Bible has one. Surely, if we are commanded as such God would not leave that up to our own interpretation. Obviously, that would lead to all sorts of confusing ideas and doctrines on how we are to practice our faith. This would not be the case because we do know that God is not the author of confusion. (I Corinthians 14:33)
First, let's look to see if Paul speaks to this in this letter to the Colossians since it is there the instructions are given by him. Just one chapter over we find these words: "And whatsoever ye do in word or deed, do all in the name of the Lord Jesus, giving thanks to God and the Father by him." (Colossians 3:17) There you have it!
But Paul takes this one step further; he says that isn't quite enough. Those things are done publicly. What about privately? Something still is missing. Not only is our speech and our deeds to be done in the name of the Lord, but he says all our most private thoughts are to occur in the name of the Lord: "Casting down imaginations, and every high thing that exalteth itself against the knowledge of God, and bringing into captivity every thought to the obedience of Christ;". (II Corinthians 10:5) This was Eve's failure in the Garden. Her thoughts in her temptation failed to be in obedience to God. She questioned His knowledge. She believed Satan's lie! It is here the battle is fought and won--in the mind, allowing the mind of the old man to supersede the mind and authority of Christ.
As expected, given these as examples, we do find many places, all in concert, defining our life in Christ as it is revealed by our "walk in Him." So, we can say, even though we can delve much deeper into this discussion, the answer to our main question can be put very simply:
Paul even goes on to tell us what spirit we are to have about us as we live or walk in Him: "...giving thanks to God and the Father by him." (Colossians 3:17)
As we so easily can see, this pretty much covers all our human activity. Is this no more or no less than praying as Jesus instructed: "...Thy will be done in earth, as it is in heaven."
All our speech, all our deeds, and, all our thoughts. This was the life of Christ and His relationship with His Father. As He so often said, He came not to do His will but the Father who sent Him. (John 14:24)
Let's think about this for a minute. Consider the first, our speech.
Christ says that which is not in Him, when a word is spoken, it defileth the person. "Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth him." (Matthew 15:11)
James adds, that defiles the whole body, inflaming the base nature of the person, causing him to burn. "And the tongue is a fire, a world of iniquity: so is the tongue among our members, that it defileth the whole body, and setteth on fire the course of nature; and it is set on fire of hell." - (James 3:6)
One final reference that speaks to the spirit in which we speak: "Though I speak with the tongues of men and of angels, and have not charity, I am become as sounding brass, or a tinkling cymbal." - (I Corinthians 13:1)
Turning to our deeds, Paul has given us our instructions in our key verse: "...do all in the name of the Lord Jesus...". (Colossians 3:17) Consider just these few additional passages in your study:
Considering our most private thoughts, we find these passages instructive:
Finally, I leave you with this admonition from Paul's pen: "See then that ye walk circumspectly, not as fools, but as wise, Redeeming the time, because the days are evil." - (Ephesians 5:15-16)