Isaiah 58:9

Then shalt thou call, and the LORD shall answer; thou shalt cry, and he shall say, Here I am. If thou take away from the midst of thee the yoke, the putting forth of the finger, and speaking vanity;

Then shall thou call, and the Lord shall answer,.... A spirit of grace and supplication will be poured out upon the people of God; they will then pray without a form, and call upon the Lord in sincerity and truth, with faith and fervency; and the Lord will hear and answer them, and plentifully bestow his favours on them, so that they will have no reason to complain, as in Isaiah 58:3:

thou shalt cry, and he shall say, Here I am; he will immediately appear to the help and relief of his people; they shall have his presence with them, to comfort and refresh them, to support and supply them, to protect and defend them:

If thou take away from the midst of thee the yoke; of human inventions, doctrines, rites and ceremonies, as in Isaiah 58:6: "the putting forth of the finger"; pointing at those that could not comply with them, by way of scorn and derision, as puritans, schismatics, &c. and persecuting them for it; and so is the same with smiting with the fist of wickedness, Isaiah 58:4; when this deriding and persecuting spirit is done away, then, and not till then, will the prayers of a people be heard, though under a profession of religion, and under the Protestant name: and speaking vanity; which also must be taken away, or desisted from; even speaking false doctrines, as the Syriac version; or which profits not, as the Vulgate Latin version; profane and vain babblings, 2 Timothy 2:14, and threatening words, to such who will not receive them.