When we know how great our God is, then we will be giving thanks to Him with our every breath.
God is great because He is all-powerful and almighty.
God is great because He is all-loving and forgiving.
God is great because even though we have sinned and were unfaithful to Him, God still makes the first step in offering reconciliation.
He keeps repeating that He is our God and that we are His people.
And God also says in the 1st reading: Since I forgive their iniquity and never call their sin to mind.
Just as Peter proclaimed Jesus as the Christ, the Son of the living God, we too must proclaim that God is great and all loving and forgiving.
But just as Peter became an obstacle almost immediately after his profound proclamation, may we too be aware that we can fall easily into sin and be an obstacle for others.
But when we give thanks to God constantly with our every breath, then God will also constantly be by our side for we are His beloved people.
And we also heed this spiritual advice from St. John Vianney: Here is the rule for everyday life – do not do anything which you cannot offer to God.