In 1 Samuel 19:1, Saul's jealousy escalates to ordering David's death — the direct narrative consequence of his watchful eye.

In Genesis 4:5, Cain's anger at God's favor toward Abel mirrors Saul's jealousy over David's success — both envy leads to hostility.

In Genesis 31:2, Laban's face changes toward Jacob after his prosperity — a parallel to Saul's shift in attitude toward David.

Mark 15:10 notes Jesus was handed over out of envy — Saul's envy of David similarly drives persecution of an innocent.

In Matthew 20:15, Jesus rebukes envy over generosity — the same heart attitude Saul shows toward David's success.

Job 5:2 states that envy kills the foolish — Saul's jealous watching of David exemplifies this principle.

Ecclesiastes 4:4 observes that success breeds envy — David's victories provoked Saul's envy, as seen here.

In Mark 7:22, envy is listed as a sin from the heart — Saul's eyeing of David exemplifies this defiling sin.

1 Peter 2:1 commands believers to put away envy — Saul's envy here is the negative example of what to reject.