Contemporary English Version (CEV)
The preacher here is emphasizing rest because of it's importance -- true rest can come only when we trust in God, and God's Word reveals what we might try to hide. We can make it look like we're trusting God, but God knows our hearts, so pretending is useless -- let us confess our weaknesses, our sins and our faults, and take small steps, with the help of the Holy Spirit, to trust in God day by day.
It can be scary to think that God knows our hearts, until we remember that the same God who comes as judge also comes as Savior. God has not come searching for evidence that your faith is weak or misguided, but God has come to rescue you, to redeem you, to restore us back to true life in him. God's agenda is not to punish those seeking to follow, but rather to save those who would receive his abundant life.