ἴσθι (ísthiis'-theeverbto be)
[Grk] ἴσθι, εἰμί LN: 13.1, 68.20, 85.1 GK: G1639
Derivation: second person imperative present of εἰμί;
Strong's: be thou
KJV: --+ agree, be, X give thyself wholly to.
See: εἰμί