2 CORINTHIANS 9:8
God will not LEAD you where His grace cannot KEEP you. That is to say, when we undertake the work assigned to us by the Lord we will find the Life of the Lord is present to give us all the inner spiritual strength to see it through to completion.
I am not saying everything will go smoothly and you will never have any self-doubt or fear. Far from it. But listen to what Paul says: “We are hard-pressed on every side, yet not crushed; we are perplexed, but not in despair; persecuted, but not forsaken; struck down, but not destroyed” (2 Corinthians 4:8,9). His secret? “I also labor, striving according to His working which works in me mightily” (Colossians 1:29). Not I, but Christ. This is the secret to the Christian life and it is the key to all fruitful spiritual work.