Revelation 2:7 uses the same 'he who has an ear' call — there promising the tree of life, here warning about the beast.

Revelation 2:11 also uses the 'hear' formula — promising victory over the second death, while 13:9 calls for endurance.

Revelation 2:17 again uses the 'hear' formula — offering hidden manna and a new name, paralleling the call to heed in 13:9.

Revelation 2:29 repeats the same phrase 'He who has an ear, let him hear' — a recurring call to heed the Spirit's message.

Matthew 13:9 has the identical saying 'He who has ears, let him hear' — Jesus' invitation to discern spiritual truth.