"For now the Lord hath made room for us, and we shall be fruitful in the land." (Gen. 26)
The worldlings and worldly christians do grab and take; selfishly seeking positions of honor and trinkets of dust. But the criteria of God's man or God's woman is to wait on the Lord.
"The number one criteria for being an elder is that you don't want to be an elder." (Zac Poonen)
It would follow then for us to be God's man is just to wait on God Himself. The number one criteria to be a fruitful blessing in our christian lives is not to grab and take but to wait on the Lord; not wanting anything even to go preach, or teach or any other thing - except that God makes room for you to do it. Amen!