It's almost all nonsense. God doesn't protect us from all trouble. Trials are a necessary part of the Christian life.

(James 1:2-4 NIV) Consider it pure joy, my brothers, whenever you face trials of many kinds, {3} because you know that the testing of your faith develops perseverance. {4} Perseverance must finish its work so that you may be mature and complete, not lacking anything.

(1 Peter 1:6-7 NIV) In this you greatly rejoice, though now for a little while you may have had to suffer grief in all kinds of trials. {7} These have come so that your faith--of greater worth than gold, which perishes even though refined by fire--may be proved genuine and may result in praise, glory and honor when Jesus Christ is revealed.

(1 Peter 4:12-13 NIV) Dear friends, do not be surprised at the painful trial you are suffering, as though something strange were happening to you. {13} But rejoice that you participate in the sufferings of Christ, so that you may be overjoyed when his glory is revealed.

And no, you can't pass God's blessing to your children.