King James Version (KJV)
Though I have bound {and} strengthened their arms, yet do they imagine mischief against me. {have...: or, chastened}
Modern English
Though I have taught and strengthened their arms, yet they plot evil against me.
Hebrew
וַאֲנִ֣י יִסַּ֔רְתִּי חִזַּ֖קְתִּי זְרֽוֹעֹתָ֑ם וְאֵלַ֖י יְחַשְּׁבוּ־רָֽע׃
vaʾaniy yisartiy ḥizaqtiy zrvoʿotam vʾelay yḥashbv-raʿ