Jesus needed to remind his disciples that the nation had abandoned 'The Rock' of their salvation. In charging Peter (Petros) to lead the new band of believers, Jesus promised to build his church on Peter's profession of faith (Matthew 16:18). In the background to this moment, Matthew counted on the Israelites remembering the words from Deuteronomy 32, which spoke of the Lord being their Rock."He is the Rock; his deeds are perfect.
Everything he does is just and fair.
He is a faithful God who does no wrong;
how just and upright he is!" - v.4
"They abandoned the God who made them and rejected the Rock their Savior. 16 They made him jealous with their foreign gods and angered him with their detestable idols.
17 They sacrificed to false gods, which are not God—
gods they had not known,
gods that recently appeared,
gods your ancestors did not fear.
18 You deserted the Rock, who fathered you; you forgot the God who gave you birth." - v.15-18
Living in Grace