Never choose to be a worker for God. But if God has called you, watch out that you don’t “turn to the right or the left” (Proverbs 4:27). We aren’t here to work for God because we have chosen to do so; we’re here because Christ Jesus has taken hold of us. Now that we are in his service, we no longer wonder whether or not we’re cut out for it; we no longer think about what we’d like to preach. What we preach is determined by God, not by our natural inclinations.

Keep your soul steadily related to God and remember why you have been called—not only to give personal testimony but to preach the gospel. Every Christian must testify, but Christians who have received the call to preach have an added responsibility: they must endure the agonizing grip of God’s hand on their lives. Your life is in the grip of God for one thing and one thing only: to answer his call. How many of us are held like that?

Never water down the word of God. Preach it in its undiluted sternness, with unflinching loyalty. But when it comes to dealing with your fellow human beings, remember who you are: not a special being set above the rest, but a sinner saved by grace, a sinner who has yet to obtain the prize. “I press on toward the goal to win the prize for which God has called me heavenward in Christ Jesus” (Philippians 3:14).

Wisdom from Oswald

When we no longer seek God for His blessings, we have time to seek Him for Himself.  The Moral Foundations of Life, 728 L