Mark 12:30ἰσχύος
Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.’
Luke 10:27ἰσχύϊ
He answered, “‘Love the Lord your God with all your heart and with all your soul and with all your strength and with all your mind’ and ‘Love your neighbor as yourself.’”
Ephesians 1:19ἰσχύος
and the surpassing greatness of His power to us who believe. These are in accordance with the working of His mighty strength,
2 Thessalonians 1:9ἰσχύος
They will suffer the penalty of eternal destruction, separated from the presence of the Lord and the glory of His might,
1 Peter 4:11ἰσχύος
If anyone speaks, he should speak as one conveying the words of God. If anyone serves, he should serve with the strength God provides, so that in all things God may be glorified through Jesus Christ, to whom be the glory and the power forever and ever. Amen.
Revelation 5:12ἰσχὺν
In a loud voice they were saying: “Worthy is the Lamb who was slain, to receive power and riches and wisdom and strength and honor and glory and blessing!”

Abbott-Smith

ἰσχύς, -ύος, ἡ
[in LXX chiefly for כֹּחַ, also for חַיִל, עַז, גְּבוּרָה, etc. ;]
strength, might, power, force, ability: Rev.5:12 7:12; ἰ. κ. δύναμις, 2Pe.2:11; τ. κράτος τῆς ἰ. (Isa.40:26), Eph.1:19 6:10; ἡ δόξα τῆς ἰ., 2Th.1:9; ἐξ ἰ., 1Pe.4:11; ἐν ὅλῃ τ. ἰ., Mrk.12:30, 33" (LXX) Luk.10:27 (LXX).†
SYN.: δύναμις (which see, and cf. ICC, Php.4:13); κράτος (cf. M, Th., I, 1:9)
(AS)

Sources: Abbott-Smith’s Manual Greek Lexicon of the New Testament (1922, public domain) and glosses from STEPBible TBESG (CC BY 4.0); STEPBible TAGNT (Greek New Testament, CC BY 4.0); the Berean Standard Bible (public domain). Reformatted by Word Study, wording unchanged. All sources and licenses.