“Third, even if Psalm 69:8 applies to Christ, and even if the mother is Mary, the other children need not be biological children. Revelation 12:17 specifically says that the Mother of Christ’s children are “those who obey God’s commandments and hold to the testimony of Jesus.””
http://catholicdefense.blogspot.com/2011/12/does-psalm-698-proves-that-mary-had.html
Revelation 12:17 (KJ21)
17 And the dragon was wroth with the woman, and he went to make war with the remnant of her seed, who keep the commandments of God, and have the testimony of Jesus Christ.
Revelation 12:17 (ASV)
17 And the dragon waxed wroth with the woman, and went away to make war with the rest of her seed, that keep the commandments of God, and hold the testimony of Jesus:
Revelation 12:17 (AMP)
17 So then the dragon was furious (enraged) at the woman, and he went away to wage war on the remainder of her descendants—[on those] who obey God’s commandments and who have the testimony of Jesus Christ [and adhere to it and bear witness to Him].
Revelation 12:17 (CEB)
17 So the dragon was furious with the woman, and he went off to make war on the rest of her children, on those who keep God’s commandments and hold firmly to the witness of Jesus.
Revelation 12:17 (CJB)
17 The dragon was infuriated over the woman and went off to fight the rest of her children, those who obey God’s commands and bear witness to Yeshua
Etc.
http://www.biblegateway.com/verse/en/Revelation%2012:17
Psalm 69 = Jesus telling Israel his words 1,000 years before. I can show you plenty more messianic psalms if you wish but you would probably refuse to open your eyes anyway.
By the way your revelation scripture is talking about Israel the nation,
Can you point me to the Catholic Bible commentary which identifies the woman of Revelation 12 as Mary.