I testify (marturomai). Elsewhere in the N.T. only in Paul's Epistles ( Galatians 5:3 ; Ephesians 4:17 ; 1 Thessalonians 2:12 ). It means "I call to witness" while marturew means "I bear witness." This day (en th shmeron hmerai). The today day, the last day with you, our parting day. I am pure from the blood of all men (kaqaro eimi apo tou aimato pantwn). Paul was sensitive on this point as in Corinth ( Acts 18:6 ). It is much for any preacher to claim and it ought to be true of all. The papyri also give this use of apo with the ablative rather than the mere ablative after kaqaro.