What does the Bible say about who can ascend into heaven?

Psalm 24:3-4 poses the question, 'Who shall ascend into the hill of the Lord?' The response indicates that only those who possess clean hands and a pure heart are able to stand in His holy place. Clean hands signify having never committed any sinful act, while a pure heart represents the absence of wicked thoughts or feelings. These qualifications highlight the impossibility of any human meeting such standards. This passage ultimately points to the Lord Jesus Christ, who alone meets these requirements as He embodies perfection and holiness.