Read Exodus 4:21-23

God was saying to his servant, “Moses, you simply go before Pharaoh and deliver the goods. He won’t like it. He won’t want it. Just bear in mind that even his stubborn, hardened heart is not outside My will." In the following verse, the Lord gave Moses specific instructions of what to say when he rammed into that brick wall. “Then you shall say to Pharaoh, ‘Thus says the LORD, “Israel is My son, My first-born. So I said to you, ‘Let My son go, that he may serve Me’; but you have refused to let him go. Behold, I will kill your son, your firstborn”’” (Exodus 4:22–23).

To put it into the vernacular, that was a gutsy message. You walk out of the desert into a new land, get an audience with the king, stand before him eyeball to eyeball, and say, “Pharaoh, God says to let His people go. But because you will refuse to do that, your own son will die.”

Wow! What a tough thing to say. Yet, it was the Lord’s own words. It was a good thing Moses had already settled the issue of obedience to his Lord back in Midian. Moses didn’t argue; Scripture doesn’t report so much as a flinch. Forty years in the wilderness had changed the man. He was ready to be God's mouthpiece, whatever the consequences. In fact, from that moment on, he seemed to have a quiet confidence in his dealings with the feisty Pharaoh. Knowing he was in the nucleus of God’s will, he must have felt invincible.

We could call any work done in the will of God “the work of righteousness.” And in doing that work, you will be surrounded by peace. Deep within you, in the very outworking of that service and that obedient walk, you will enjoy quietness and confidence. The original Hebrew term rendered “confidence” here might be better termed “security.” The King James Version translates it “assurance.”

In other words, there will be a quiet, secure confidence when you are walking in His will. There will be an invincible sense of inner assurance, gently and humbly accepted. Every believer in Jesus Christ longs to experience such assurance. It comes from being in the flowing current of His will. It envelops us when we do God’s will, God’s way.

Taken from Great Days with the Great Lives by Charles R. Swindoll. Copyright © 2005 by Charles R. Swindoll, Inc. Used by permission of HarperCollins Christian Publishing.