"For he will hide me in his shelter in the day of trouble; he will conceal me under the cover of his tent; he will lift me high upon a rock." Psalm 27:5

Serving God is dependent on God. If I ever truly serve God (as opposed to serving myself), then the process, the action, is totally dependent on Him for several reasons. It is based on the 'previous-ness' of God as well as His greatness, goodness and holiness. He always goes before us. We can have or do nothing that first hasn't been given to us from God - He is the giver of every good and perfect gift. Faith, service, love - the ability all come from Him as gifts. "Whoever serves, let him do so by the strength which God supplies" (1 Peter 4:11).