How do we know that God's knowledge encompasses His people?

The assurance of God's intimate knowledge of His people is beautifully portrayed in Isaiah 17:6, where even amidst a few gleaning grapes left after harvest, God knows precisely where they are. Throughout the scriptures, examples abound, such as God's directing Philip to the Ethiopian eunuch, demonstrating that He is actively involved in bringing His elect to faith. God's promise, as found in 2 Timothy 2:19, that 'the Lord knows those who are His,' affirms the truth that His sovereignty and providence work to ensure that His people are cared for and gathered.