isaiah 48:8 Yea, thou heardest not; yea, thou knewest not; yea, from that time that thine ear was not opened: for I knew that thou wouldest deal very treacherously, and wast called a transgressor from the womb. - Free Bible Online

      8. heardest not--repeated, as also "knewest not," from Isa 48:7.
      from that time--Omit "that." "Yea, from the first thine ear did not open itself," namely, to obey them [ROSENMULLER]. "To open the ear" denotes obedient attention (Isa 50:5); or, "was not opened" to receive them; that is, they were not declared by Me to thee previously, since, if thou hadst been informed of them, such is thy perversity, thou couldst not have been kept in check [MAURER]. In the former view, the sense of the words following is, "For I knew that, if I had not foretold the destruction of Babylon so plainly that there could be no perverting of it, thou wouldst have perversely ascribed it to idols, or something else than to Me" (Isa 48:5). Thus they would have relapsed into idolatry, to cure them of which the Babylonian captivity was sent: so they had done (Ex 32:4). After the return, and ever since, they have utterly forsaken idols.
      wast called--as thine appropriate appellation (Isa 9:6).
      from the womb--from the beginning of Israel's national existence (Isa 44:2).

JFB.