How do we know God is not willing that any should perish?

The assertion that God is not willing that any of His elect should perish is rooted in the understanding of divine sovereignty and the nature of God's election. In 2 Peter 3:9, the phrase 'not willing that any should perish' must be understood within the context of God's promises to His people—the elect. The text is clear; it reflects God's intention to save all those who have been given to Christ. Moreover, God’s perfect will assures that His promises will not fail. In John 6:39, it states, 'And this is the Father’s will which hath sent me, that of all which he hath given me I should lose nothing, but should raise it up again at the last day.' Therefore, the security of the believer rests in the faithfulness of God to His Word.