Luke 2:26 “And it was revealed unto him by the Holy Ghost, that he should not see death, before he had seen the Lord’s Christ.”
We do not know exactly how this was revealed to Simeon, whether in a vision or dream. Though it is more likely it was done directly as the Holy Spirit was ‘upon’ him according to the previous verse. This would indicate that Simeon had a very healthy relationship with the Lord. Unique knowledge and unique obedience often go together.
Heavenly Father, thank You for giving to each of us the knowledge we need for our lives. We can live so much differently because we know You. Your grace changes everything! In the Name of the Lord Jesus Christ I pray and praise You, Amen.