What does the Bible say about the picture of salvation?

The Bible illustrates salvation through various types and shadows found in the Old Testament, with one prominent example being the fiery serpent raised by Moses. In Numbers 21, the people of Israel, bitten by serpents, were commanded to look upon this serpent to be healed. This act of looking served as a picture of faith, representing how Christ was to be lifted up for the salvation of sinners. Just as the Israelites were saved by looking to the bronze serpent, we are saved by looking to Christ, who was lifted on the cross. This typology emphasizes the sufficiency and effectuality of Christ's sacrificial death for the salvation of His people.