Saad means to support, sustain, or uphold — whether supporting a person physically (Ps 18:35, 'your right hand sustains me') or providing food that sustains strength (Gen 18:5, 'I will bring a morsel of bread to strengthen your heart'). The word suggests active undergirding — not merely passive presence but the act of holding something or someone up so they do not fall.
The divine saad runs throughout the Psalms as a description of God's upholding grace. 'Your right hand sustains [saad] me' (Ps 18:35) — in the very moment of battle and vulnerability, God's hand is beneath the psalmist, preventing collapse. This sustaining is not distance support but close engagement. The Apostle Paul echoes this in Philippians 4:13: 'I can do all things through him who strengthens me' — the Greek endunamoō carries the same idea of being inwardly upheld. God does not remove us from difficulty; He sustains us through it.