A prayer of gratitude for past salvation naturally flows into a plea for future protection. When a person survives a life-threatening danger, they look to God for continued mercy, contrasting the depth of their peril with the sheer power of divine rescue [ביאור שטיינזלץ].
The request for God to look upon this suffering and grant mercy operates on two distinct levels. On a personal level, King David reflects on his own life. He prays that just as God saw his pain and delivered him from specific, cruel foes like Goliath [רד״ק] or Laban [מלבי״ם], God will continue to protect him from the many enemies who still pursue him [רד״ק, מלבי״ם, מאירי]. On a national level, this plea echoes the collective voice of the Israelites suffering under the heavy burden of exile, begging God to witness their hardship and bring about their redemption [רש״י, אלשיך].
The danger they face is not abstract. It is a tangible threat, similar to standing at the entrance of a house about to step inside, or walking down the direct path to the grave [רד״ק, מלבי״ם]. Against this terrifying reality stands God's rescue. A sharp contrast is created between the deadly gates, which rest in the lowest depths, and God's action of lifting the person high above and far away from the abyss [אבן עזרא, ביאור שטיינזלץ].
The primary approach among commentators is that this cry for help rests on the foundation of past miracles. God is the One who has always reached down to save people from certain death [מצודת דוד, אבן עזרא]. This was true when everyone was certain King David would fall in battle [רד״ק] or when he was merely a step away from dying [מלבי״ם]. The memory of these past rescues provides the confidence to ask for future protection. Conversely, some view this upward lift not as a past event, but as a promise of future salvation when the Israelites are finally redeemed from exile [רש״י].
A unique perspective closely connects the suffering caused by enemies directly to the ultimate rescue. According to this view, the pain and oppression of exile are precisely what elevate the Israelites and keep them from crossing the threshold of death, understood here as the gates of hell. This aligns with a tradition that Abraham chose the hardships of exile in this world for his descendants in order to purify them, ultimately saving them from a much harsher punishment [אלשיך].