Surah As-Saf 61:14

يَـٰٓأَيُّهَا ٱلَّذِينَ ءَامَنُوا۟ كُونُوٓا۟ أَنصَارَ ٱللَّهِ كَمَا قَالَ عِيسَى ٱبْنُ مَرْيَمَ لِلْحَوَارِيِّـۧنَ مَنْ أَنصَارِىٓ إِلَى ٱللَّهِ ۖ قَالَ ٱلْحَوَارِيُّونَ نَحْنُ أَنصَارُ ٱللَّهِ ۖ فَـَٔامَنَت طَّآئِفَةٌ مِّنۢ بَنِىٓ إِسْرَٰٓءِيلَ وَكَفَرَت طَّآئِفَةٌ ۖ فَأَيَّدْنَا ٱلَّذِينَ ءَامَنُوا۟ عَلَىٰ عَدُوِّهِمْ فَأَصْبَحُوا۟ ظَـٰهِرِينَ

O you who have believed, be supporters of Allāh, as when Jesus, the son of Mary, said to the disciples, "Who are my supporters for Allāh?" The disciples said, "We are supporters of Allāh." And a faction of the Children of Israel believed and a faction disbelieved. So We supported those who believed against their enemy, and they became dominant.

Translation: Saheeh International

Tafsir

O you who believe be helpers of God of His religion a variant reading of ansāran li’Llāhi has the genitive annexation ansāra’Llāhi just as said kamā qāla to the end of the statement means ‘just as the disciples were so’ as is indicated by what follows Jesus son of Mary to the disciples ‘Who will be my helpers unto …

Excerpt from Tafsir al-Jalalayn, commentary on 61:14, via Quran.com. The reader has the full commentary and 9 more tafsirs.