Adam Clarke, on 1Tim 6:10

The love of money is the root of all evil - Perhaps it would be better to translate παντων των κακων, of all these evils; i.e. the evils enumerated above; for it cannot be true that the love of money is the root of all evil, it certainly was not the root whence the transgression of Adam sprang, but it is the root whence all the evils mentioned in the preceding verse spring. This text has been often very incautiously quoted; for how often do we hear, "The Scripture says, Money is the root of all evil!" No, the Scripture says no such thing. Money is the root of no evil, nor is it an evil of any kind; but the love of it is the root of all the evils mentioned here. While some coveted after - Ορεγομενοι· Insatiably desiring. Have erred from the faith - Απεπλανηθησαν· Have totally erred - have made a most fatal and ruinous departure from the religion of Christ. And pierced themselves through with many sorrows - The word περιεπειραν signifies to be transfixed in every part; and is an allusion to one of those snares, παγιδα, mentioned Ti1 6:9, where a hole is dug in the earth, and filled full of sharp stakes, and, being slightly covered over with turf, is not perceived; and whatever steps on it falls in, and is pierced through and through with these sharp stakes, the οδυναις πολλαις, the many torments, mentioned by the apostle. See on Ti1 6:9 (note).