O Lord, deliver your people and enrich your heritage. David interceded for the children of God—Israel—as he prepared to inherit the kingdom. In Exodus, God referred to the Israelites as His appointed or ancestral people, stating, "You shall be to me a chosen people" (Exodus 19:5). The Lord instructed, "You shall guide your people while I reign over them in spirit, and together we shall provide them with wise counsel." Through signs and triumphs, exalt Him continually. The preceding admonition—Grant them, O Lord, according to their deeds—can be attributed to the Jews who condemned Christ. Their wickedness blinded them to the miracles performed by the Lord. Consequently, when they were cast down, they remained enslaved, unable to rise again.
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However, God fortified the faithful Christian community. The intercession—O Lord, save your people—can also be directed toward Christ; it applies to the Gentiles entrusted to Him as His heritage, namely, the Christians. For this community, Christ has brought salvation, truly exalting and glorifying them in both this life and the next. Such is a commendable prayer for the people. It is remarkable that David, even while being pursued by those who allied with Saul against him, offered a prayer on their behalf. He anticipated his eventual transformation and chose to focus not on their offense but on the service that awaited.