This Sunday begins the first Sunday of Passiontide. As Fr. Gabriel writes in Divine Intimacy,

Today Passiontide begins, a time especially consecrated to the remembrance and loving contemplation of the sorrows of Jesus. The veiled crucifix and statues, the absence of the Gloria in the Mass and the Gloria Patri responsories of the Divine Office, the suppression of the psalm Judica me at the beginning of Mass — are all signs of mourning by which the Church commemorates Our Lord’s Passion. Pope St. Leo exhorts us to participate “in the Cross of Christ, in order that we also may do something which will unite us to what He has done for us, for as the Apostle says, ‘if we suffer with Him, we shall be glorified with Him.’” Therefore, we must not only meditate on Jesus’ sufferings, but also take part in them; only by bearing His Passion in our heart and in our body (cf. 2 Cor 4,10) shall we be able to share in its fruits. So it is that in the liturgy of this season the Church repeats more insistently than ever: “If you hear the voice of the Lord, harden not your hearts.” The voice of the Lord makes itself hear these days, not by words, but by the eloquent testimony of deeds, by the great events of the Passion — a mystery which gives us the most convincing proof of His infinite love for us. Let us, therefore, open our heart to the sublime lessons of the Passion: let us see how much Jesus has loved us and how much we ought to love Him in return; let us learn that, if we wish to follow Him, we, too, must suffer and bear the Cross with Him and after Him. At the same time, let us open our heart to a lively hope; for our salvation is in the Passion of Jesus. In today’s Epistle (Heb 9,11-15) St. Paul presents to us the majestic figure of Christ, the Eternal High Priest, who “by His Blood, entered once into the holies, [that is, heaven] having obtained eternal redemption.” The Passion of Jesus has redeemed us; it has opened once again our Father’s house to us; it is then the motive for our hope.

See also:

• Lenten meditations from Divine Intimacy
• Lent & Passiontide
• Lenten preparation
• Via Crucis (Way of the Cross) with scenes from The Passion of the Christ