כִּֽי־אַ֭תָּה תָּאִ֣יר נֵרִ֑י יְהוָ֥ה אֱ֝לֹהַ֗י יַגִּ֥יהַּ חָשְׁכִּֽי׃
Com o teu auxílio dou numa tropa; com o meu Deus salto uma muralha.
Rashi on Psalms
For You light my lamp when he fought at night with the Amalekite troop that attacked Ziklag, as it is stated (in I Sam. 30:17): “And David smote them from evening until evening to their morrow.”