Psalms 12 - Wesley's Explanatory Notes

Prevail — By raising and spreading evil reports concerning him. Our own — At our own disposal to speak what we please, who can control or restrain us?

Puffeth — From him that despises him, and hopes to destroy him with a puff of breath.

Pure — Without the least mixture of falsehood; and therefore shall infallibly be fulfilled.

Thou shalt keep them — Thy words or promises: these thou wilt observe and keep, both now, and from this generation for ever.

Walk — They fill all places, and go about boldly and securely.