How were Old Testament saints saved without Christ's sacrifice?

Old Testament saints were saved through faith, anticipating the coming of a Redeemer, as seen throughout the Scriptures in various prophecies and types. They believed in the promised Messiah, who would fulfill God’s law and establish reconciliation with Him. Hebrews 11:1 defines faith as 'the assurance of things hoped for, the conviction of things not seen.' While Christ had not yet come, the sacrifices and offerings they made symbolized their trust in God's ultimate provision for sin through the Lamb of God, who would take away the sin of the world. Their faith looked forward to Christ, similar to how believers today look back to His finished work on the cross.