Faced with the profound questions posed by human freedom, the mystery of evil, the rebellion of the creature, Psalm II gives the solution by proclaiming the kingship of Christ, above the evil that exists or can exist: But I have made you my king over Zion, my holy mountain. I will preach his decree. To me the Lord has said: "You are my son, this day have I begotten you". "The mercy of God the Father has given us his Son as King. When he threatens, he is moved with tenderness; he proclaims his wrath and gives us his love. You are my son: he addresses Christ and he addresses you and me, if we decide to be alter Christus, ipse Christus.
"Words cannot follow the heart, which is moved by the goodness of God. He says to us: you are my son. Not a stranger, not a servant benevolently treated, not a friend, which would be too much. Son!". This is our refuge: divine sonship. Here we find the necessary strength against adversities: those of an environment sometimes hostile to the Christian life, and the temptations that the Lord allows so that we may reaffirm our faith and love.
We always find our Father God very close, his presence is "like a penetrating odor that never loses that strength with which he introduces himself everywhere, both inside the hearts that accept him, as well as outside, in nature, in things, in the midst of a crowd. God is there, waiting to be discovered, to be called, to be taken into account (...)".
Ask of me, and I will give you the nations as an inheritance, and I will extend your dominions to the ends of the earth18. Every day the Lord says to us: ask me! In a particular way in those moments of thanksgiving after communion, Jesus says to us: Ask me. His desires are to give and to be given to us.
St. John Chrysostom comments on these words of the psalm and teaches that we are no longer promised a land flowing with milk and honey, nor a long life, nor a multitude of children, nor wheat, nor wine, nor flocks, but Heaven and the good things of Heaven: divine sonship and brotherhood with the Only Begotten, and to have a share in his inheritance, and to be glorified together with him and to reign with him.
Thou shalt rule them with a rod of iron, and shalt break them like potter's vessels. Now therefore, O ye kings, understand this well: let yourselves be instructed, ye that judge the earth. Serve the Lord with fear, and exalt him with holy trembling. Christ has triumphed forever. By his death on the Cross he has won our life. According to the testimony of the Fathers of the Church, the iron rod is the Holy Cross, "whose matter is wood, but whose strength is iron". It is the sign of the Christian, with which we will conquer all battles: the obstacles will be broken like potter's vessels. The Cross in our intelligence, on our lips, in our heart, in all our works: this is the weapon to conquer; a sober, mortified life, without fleeing from the gracious sacrifice that unites us to Christ.
The psalm ends with an appeal to remain faithful in the way and in trust in the Lord: Embrace the good doctrine, lest at last he be angry, and you perish out of the way, when his wrath is soon kindled. Blessed are those who have put their trust in him. We have put all our trust in the Lord. We ask the Holy Guardian Angels, faithful servants of God, to keep us each day with greater fidelity and love in our own vocation, serving the reign of his Son wherever he has called us.
https://www.hablarcondios.org/meditaciondiaria.aspx