American Standard Version (ASV):
Brethren, I count not myself yet to have laid hold: but one thing [I do], forgetting the things which are behind, and stretching forward to the things which are before,
King James Version (KJV):
Brethren, I count not myself to have apprehended: but [this] one thing [I do], forgetting those things which are behind, and reaching forth unto those things which are before,