This year has been a very visible one, full of ups and downs, for the “Messenjah,” Luciano, following an extended period of relative quietude. Things started off with a Grammy nomination, his second, for his 2014 album Zion Awake, but took a turn for the worse when his son, Menelik McClymont, was killed in February. More recently, he’s topped the Jamaican reggae charts with “In The Name of Love,” an R&B piano ballad. It all points to what should be a poignant and emotional Sumfest appearance, on Reggae Night on Saturday.