God's chastisement for his children

"But, as for afflictions, we must reply, firstly: although all affliction and death entered into the world by sin, God does not always have regard to our sins when He afflicts us. We establish this from the whole history of Job and elsewhere (John 9:3; 1 Pet 2:19; 3:14; James 1:2). But He has several other ends in view which tend to His glory and our profit, as we shall explain further on.
On the other side, when God afflicts Hus own for their sins, even if He comes to make them feel the pains of death (Job 13:15), He is not provoked to anger against them as a judge, to condemn them, but as a Father who is chastising His children in order to prevent them from perishing (2 Cor 6:9; Heb 12:6; 2 Sam 7:14), or to give an example to others (2 Sam 12:13, 14)."  - Theodore Beza, The Christian Faith, pg. 19



"Nor do the hidings of God's face from them after conversion, prove any change in his love to them; for though he hides his face from them, and forsakes them for a moment, in a little seeming wrath, to shew his resentment at their sins, to bring them to a sense of them, to humble them before him, and to cause them to seek his face and favour; yet with great mercies he gathers them again to himself, in the most tender manner, and with loving-kindness, has mercy on them; and, for the strengthening of their faith in his love, swears he will not be wroth with them; and declares his loving-kindness to be more immoveable than hills and mountains, Isa. liv. 7-10. Afflictions are no evidence of a change of affections to them; though he may thoroughly chastise them, and, as they may think, severely, yet he deals with them but as children; and, like Ephraim, they are his dear sons and daughters, and pleasant children, in whom he takes the utmost complacency and delight; chastenings are rather proofs of sonship, than arguments against it." -John Gill, The Body of Divinity, Pg. 39

This reminds me of the Westminster Confessions of Faith - Chapter 17


They, whom God hath accepted in his Beloved, effectually called, and sanctified by his Spirit, can neither totally nor finally fall away from the state of grace, but shall certainly persevere therein to the end, and be eternally saved.
2. This perseverance of the saints depends not upon their own free will, but upon the immutability of the decree of election, flowing from the free and unchangeable love of God the Father; upon the efficacy of the merit and intercession of Jesus Christ, the abiding of the Spirit, and of the seed of God within them, and the nature of the covenant of grace: from all which ariseth also the certainty and infallibility thereof.
3. Nevertheless, they may, through the temptations of Satan and of the world, the prevalency of corruption remaining in them, and the neglect of the means of their preservation, fall into grievous sins; and, for a time, continue therein: whereby they incur God's displeasure, and grieve his Holy Spirit, come to be deprived of some measure of their graces and comforts, have their hearts hardened, and their consciences wounded; hurt and scandalize others, and bring temporal judgments upon themselves.

Of course all of this reminds me of the Book of Hebrews in the Bible.