Material, physical, and temporal blessings can become a snare to the people of God, things like:

Comfort
Ease
Plenty
Rest from enemies
An established household
Fruitfulness
Skill
Health
Wealth
Possessions

Obedience to the Word of God is not optional. We see in the text today that blessings accompany obedience to God's Law, and on the flip side, curses accompany disobedience, curses like being carried off into captivity and being broken off of the vine and cast into the fire. We know that obedience apart from faith avails us nothing but damnation, because we are saved by grace through faith, not by our works.

"We must not think that, because the deliverance of the church and the destruction of its enemies are not effected immediately, therefore they will never be effected. God will do his own work in his own method and time, and we may be sure that they are always the best. Thus corruption is driven out of the hearts of believers by little and little. The work of sanctification is carried on gradually but that judgment will at length be brought forth into a complete victory."

 

The presupposition undergirding the idolatry which follows from the sons and daughters intermarrying with pagans, is the fact that the sons and daughters of the nation were getting married.
Yet it wasn't the marrying which was the problem that led to the idolatry, it was the "to whom".

In other words, as you claim that all the promises of God are yes and amen, that you believe God has ordained from eternity past that He would raise up a nation of priests to worship Him in Spirit and Truth, and that Jesus is the head of said Nation, the Church, which He died for, crushing the serpent's head, becoming the substitutionary atonement for our sins, rose from the dead, and now sits at the right hand of God the Father Almighty: if you say you believe all that, does it manifest itself in your life in how you disciple your children?

When's the last time you left Church on a Sunday afternoon, went home and declared to yourself in awe:
‘Behold, the Lord our God has shown us His glory and His greatness, and we have heard His voice from the midst of the fire; we have seen today that God speaks with man, yet he lives'?

Has anything been done like this great thing, or has anything been heard like it?

Be killing your sin, putting to death the deeds of your flesh (Romans 8:13), or GOD will be killing you.