Final answer:
Jesus's two constants in his personal prayer life were solitude and regular communication with God the Father. These are depicted in the gospels, where Jesus often retreats to pray alone and consistently engages in prayer, such as his intercessory prayer on the cross.
Step-by-step explanation:
The question pertains to the constants in Jesus's personal prayer life. In the gospels, where the mortal and divine aspects of Jesus are portrayed, two constants that can be inferred from his prayer habits are his solitude and regular communication with God the Father. The Gospel of Luke describes that Jesus often withdrew to lonely places and prayed (Luke 5:16), which exemplifies his need for solitude in his prayer life.
Additionally, Jesus's prayer on the cross, 'Father, forgive them; for they know not what they do' (Luke 23:34), among other instances, indicates a regular and sincere communication line with God, where he meditated, sought guidance, and interceded for others.
Jesus's human side is shown in the gospels where he expresses emotions such as anger and doubt, highlighting the complexity of his nature. Yet, during his lifetime, particularly in his three years of ministry, Jesus carved out intentional moments for prayer and reflection, showcasing the significance of his relationship with God the Father, as part of the Trinitarian belief in Christianity.
In considering Jesus's personal prayer life, these constants of seeking solitude and maintaining an ongoing dialogue with God are central themes that provide insight into the devotion and spiritual discipline of Jesus.