NET

5 Not that we are adequate in ourselves to consider anything as if it were coming from ourselves, but our adequacy is from God,

Darby

5 not that we are competent^D8397 of ourselves to think anything as of ourselves, but our competency [is] of God;

Darby Bible Notes

competent - I do not particularly prefer 'competent' to 'sufficient,' (as in ch. 2.16) but the sense is lost in ver. 6, if we say 'sufficient' there.

KJV

5 Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency [is] of God;

Strong's

5 Not ^G3756 that^G3754 we are^G2070 sufficient^G2425 of^G575 ourselves^G1438 to think^G3049 any thing^G5100 as^G5613 of^G1537 ourselves^G1438; but^G235 our^G2257 sufficiency^G2426 is of^G1537 God^G2316;