Baladeva’s affection for Krsna is illustrated in this statement to Subala: “My dear friend, please inform Krsna not to go to Kaliya’s lake today. Today is His birthday, and so I wish to go along with Mother Yasoda to bathe Him. Tell Him He should not leave the house today.” This shows how Balarama, Krsna’s elder brother, took care of Krsna with parental love, within the scope of fraternal affection.

From NoD 41: Fraternal Devotion, by Srila Prabhupada