How must Christian service be done?
Christian service must be done as a weak vessel whom God has chosen to use, not through human wisdom, power, or self-sufficiency. God cannot use someone unless they are nothing, so service relies on His grace and strength being made perfect in weakness.
Les explains from II Corinthians 12:8-9 and I Corinthians 1:26 that this is the whole concept of Christian service. Paul besought the Lord three times that the thorn in the flesh might depart, but the Lord said, "My grace is sufficient for thee, for my strength is made perfect in weakness." Les teaches that the minute we think we can do it ourselves, we're all done. It has to be done as a weak vessel that God has seen fit to use. God does not usually call the wise, mighty, or noble; He does not go into the kings and queens of the world or the ivy-covered halls of universities for His servants. He used common ordinary people like Amos, Gideon, and Ezekiel. Paul was an exception because he was highly educated and moved in the upper echelons of Judaism, but he constantly put himself down as nothing because he realized God cannot use somebody unless they're nothing. Moses is the prime example: after 40 years in Pharaoh's palace as the second top man in Egypt, he thought he could take the children of Israel out of slavery by his own power, pomp, circumstance, wisdom, and leadership.
But God hath chosen the foolish things of the world to confound the wise; and God hath chosen the weak things of the world to confound the things which are mighty;
And I was with you in weakness, and in fear, and in much trembling.