How do we know Jesus prayed for us?

In John 17:9, Jesus affirms, 'I pray for them: I pray not for the world, but for them which thou hast given me; for they are thine.' This indicates that the prayers of Jesus are directed to His elect, those who belong to the Father. Not only does He pray for His disciples, but He also prays for 'them also which shall believe on me through their word,' highlighting His intercession for all future believers. This shows His continual advocacy and care for all whom the Father has chosen and given to Him, assuring us of our secure position in Him.