Sincere conversion

"For thus says the Lord God, the Holy One of Israel: 'In returning and rest you shall be saved; in quietness and confidence shall be your strength...'” Isaiah 30.15

Sin does not allow the heart to settle down. Only sincere conversion brings inner peace. Peace with yourself and especially with the Spirit of God. It is the tranquility that money, the glory or the power of this world cannot give. This is the force that keeps the confidence of salvation renewed.

The just vs. The wicked

"He who walks with integrity walks securely, but he who perverts his ways will become known." Proverbs 10.9

The just lives in tranquility and peace because his conscience does not accuse him of anything. The same does not happen to those living in sin. Their sinful conscience accuses them all the time and does not allow them to have peace.

Faith and trust

"For thus says the Lord GOD, the Holy One of Israel: “ In returning and rest you shall be saved; In quietness and confidence shall be your strength.” Isaiah 30.15

Trust is not a feeling. The strength of your arms is only a mere temporary emotion. But the power of the assurance produces peace and tranquility.